The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 16, 2006
Filed:
Sep. 05, 2002
Hiroyasu Tanaka, Zama, JP;
Shigeki Shimanaka, Hadano, JP;
Satoshi Takizawa, Yokohama, JP;
Masatoshi Akanuma, Fujisawa, JP;
Takayuki Suzuki, Hiratsuka, JP;
Hiroyasu Tanaka, Zama, JP;
Shigeki Shimanaka, Hadano, JP;
Satoshi Takizawa, Yokohama, JP;
Masatoshi Akanuma, Fujisawa, JP;
Takayuki Suzuki, Hiratsuka, JP;
Jatco LTD, Fuji, JP;
Abstract
A shift control system for a vehicle automatic transmission includes a vehicle speed sensor for detecting a vehicle speed, and a first control means normally performs a shift control of the transmission so that a target speed ratio of the transmission is achieved, which is determined based at least on a vehicle speed detected by the vehicle speed sensor. The shift control system further includes a second control means that properly performs shift control of the transmission when the vehicle speed sensor is in trouble, by generating a command for holding or changing a current speed ratio based on an input rotation speed of the transmission and/or driver's accelerating or decelerating operation of the vehicle.